Farm-gate.



P. R. GRAHAM.

FARM GATE;- APPLICATION FILED APR. 1.1909.

Patented Sept. 7, 1909. I

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P. R. GRAHAM.

FARM GATE.

APPLIOATION FILED APB.1,1909.

Patented Sept. 7, 1909.

2 slIEETB-SHEET 2.

WITNESSES,

INVEHTOR HIS ATTORNEY.

rannrr'ss a. GRAHAM, or PETA'ILUMA, c'ALI'FoRNIA.

FARM-GATE.

Specification of Letters Patent,

Patented Sept. '7, 1909.

Application filed April 1, 1909. Serial No. 487,199.

To all whom it may concern:

Be it known that I, PRnNTIssR. GRAHAM, citizen of the United States,residing at Petaluma, in the county of Sonoma and State of California,have invented new and useful Improvements in Farm- Gates, of which thefollowing is a specification. Y

My invention relates to farm gates, and particularly to that class whichare adapted to be opened or closed from a point remote from the gate bythe wheels of a vehicle passing over an actuating device. The chiefadvantage in a gate of this character is that the driver or occupant ofa vehicle will not be required to stop or'get out, either to open orclose the gate.

This invention consists of the parts and the construction andcombination of parts as hereinafter more fully described and claimed,having reference to the accompanying drawings, in which- Figure 1 is aperspective View of the invention as applied. Fig. 2 is a detailed planview of the swinging device, with the gate in the closed position. Fig.3 is a View in elevation of the swinging device showing the pivotalmountings. Fig. 4 is a plan view of the swinging device at the moment ofopening the gate. Fig. 5 is a view similar to Fig. 2 showing the gate inthe opened position. Fig. 6 shows the swinging device at the moment ofclosing the gate.

A is a gate of any desired construction, having a vertically disposedframe .member 2; 3 is a post on which the gate is carried;

-4 is a socket bearing in which a pivot 5 on the lower end of the frame2 is mounted.

The upper portion of the gate is pivotally mounted as at 6 to an arm 7secured to a vertical shaft 8. This shaft is carried on the bearing 4,the upper end being supported by a bearing 9. A segment 10 is formed onthe bearing 9, and is notched at 11 and 12, to receive the end of a lockbar 13 which is pivotally mounted on the arm 7 and is adapted to bereleased from the notches 11 and 12 at the proper time, as will be seenlater, by a weighted member 14 hinged to the pivot plate 15 on the gateso that when the gate and the lever 13 are in line, member 14 willdepress and lift it clear of the notches 11 and. 12. Rigidly affixedtothe lower end of the shaft 8 are the arms 16 and 17, to which thecables 18 and 19 are attached. One extremityof each of the cables 18 and19;on one side of the gate is secured to rocker arms 20 and 21 carriedon-a crank shaft 22 resting in bearings 23. The shaft 22 is bent to forma crank or lever 24, which is operated on by the wheels of a passingvehicle, or by the foot. A weight 25 on the shaft 22'retains the crank24 in an upright position, as shown in Fig. 1. The other extremities ofthe cables 18 and 19, on the other side of the gate are similarlyconnected to the crank 24"-.

Posts 25 and 26 having stops 27 are provided, to which the gate islatched by a catch 28,'the post 25 holding the gate when in the closedposition while the post 26 retains it while in an open position.

In operation, (see Fig. 1) as pressure is brought to bear upon the crank24 in the direction of. the arrow a, such, for instance, as by a vehiclewheel passing thereover, the cable 18 is pulled by the arm 21 in thedirection of the arrow X, thereby rotating the shaft 8, arm 7, and lockbar 13 (as indicated by the arrow Y, Fig. 2) until the position shown inFig. 4 is reached. This action, by reason of the pivotal bearing 6 beingthrown out of vertical alinement with the bearing 5 raises the front endof the gate to disengage it from the keeper of latch 28, twists the gateso that it is thrown off center and tendsto swing open.

To close the gate one or the other of the cranks 24 or 24 is rocked inthe direction of the arrow W, to pull the cable 18 in an oppositedirection, thereby throwing the arm 7 back into the position shown inFig. 6, thus causing the gate to close.

It is obvious that the gate may be opened or closed by operating eithercrank 24 or 24. Lock bar 13 is to insure the proper throw or twist ofthe gate so as to open or close it.

As the arm 7 is rotated in opening the gate the lock bar 13 travelstherewith until the position shown in Fig. 4 is reached, whereupon itfalls into the notch 12; the weighted arm 14 being attached to the gateis caused to move sidewise and release the lever 13 to permit of thisaction. The lever 13, by reason of being held in the notch 12 preventsthe gate from swinging back and retains the bearings 5 and 6 out ofvertical alinement.

As the gate completes its swing, the gate comes into line again with arm7 and lockin lever 13, so that the weight 14 is caused to slide backupon the lever arm 13, releasing it from the notch 12 so as to permit ofthe return of the lever over the segment 10,

when the gate swings in the opposite direction. a I It is understoodthat the movement of arm 7 and lever 13 sidewise either to open or toclose the gate precedes the actual movemeat o he gate, s n th a 7 ismounted on the shaft 8, and of genres, it is the rocks ing of this shaftwhich opens the gate; hence, although when the gate is closed the rearend of lever 13 stands directly over notch 11, it would be lifted clearof the notch 11 by reason of the weight 14:; so that when the shaft 8 isrocked quickly it carries the lever 13 out from underneath the latch 14:and allows the lever then to slide over the segment 10, until it dropsinte the notch 12, thereby preventing the upper pivot 6 of the gate fromswinging back accidentally into vertical line with the lower pivotbefore the gate is open.

" Having thus described my invention, What I claim and desire to. secureby Letters Patent is 1. A gate having a fixed pivot at the bottom and amovable hinge at the top, a ver tical shaft ournaled adjacent to thepivoted end of the'gate, said top hinge for the gate comprising an armor plate radial to said shaft having one end fixed to said shaft andhaving the other end pivoting on the gate, means for rockin the shaft,and means when the shaft is rocked to hold it temporarily against returnduring the swinging of the gate, said last-named ineans including alever pivotally mounted on an intermediate part of said' arm andengageable with a stop mounted on a stationary support.

2. A gate having a fixed pivot at the bot tom and a movable hinge at thetop, a vertical shaft journaled adjacent to the pivoted end of the gate,said top hinge for the gate comprising an arm or plate radial to saidshaft having one end fix'ed to said shaft and the other end pivoting onthe gate, means for rocking the shaft, means when the shaft is rocked tohold it temporarily against return during the swinging of the gate, saidlast-named means including a lever pivotally mounted in an intermediateportion of said arm and engageable with a stop mounted .on a stationarysupport, and means carried by the gate to release the latch from saidstop. 7 '3. A 'ate having a fixed pivot at the bottom ant a movablehinge at the top, a vertical shaft journaled adjacent to the pivoted endof the gate, said top hinge for the gate comprising an arm or plateradial to said shaft having one end fixed to said shaft and the otherend pivoting on the gate, means for rocking the shaft, means when theshaft is rocked to hold it temporarily against re-' turn during theswinging of the gate, said last-named means including a lever pivotallymounted in an intermediate portion of said arm and engageable with astop mounted on a stationary support, and a weighted pivoted member onthe gate engageable with the free end of said lever to release it from ad top,

l. In a gate, the combination of a fixed support, top and bottombrackets thereon, a vertical shaft journaled in said brackets, a atehaving its lower end pivoted in the ower bracket, an arm having one endfixed to the shaft at the top of the gate, said arm having the oppositeend pivoted to the top of the gate at a point more remote from the rearedge of the gate than the lower pivot, means for rocking the shaft, anda lever pivoted atits central portion to an intermediate part of the armand engageable with a fixed stop to temporarily lock the shaft.

5, In a gate, the combination of a fixed support, top and bottombracket-s thereon, a vertical shaft journaled in said brackets,

a gate having its lower end pivoted in the lower bracket an arm havinone end fixed 7 b to the shaft at the top of thegate, said arm itscentral portion pivoted on an intermediate part of the arm andengageable with a fixed stop to temporarily lock the shaft, and meanscarried by the gate to release said lever. i

.6. In a gate, the combination of a fixed support, top and bottombrackets thereon, a

vertical shaft journaled in said brackets, a gate hav ng lts lower endplvoted 1n the lower bracket, an arm having one end fixed to the shaftat the top of the gate, said arm having its opposite end pivoted to thetop.

of the gate at a point more remotefrom the rear ed e of the gate thanthe lower pivot, means or'rocking the shaft, a lever having its centralportion pivoted on an intermediate part ofthe arm and engageable with afixed stop to temporarily lock the shaft, andmeans carried by the gateto release said lever, said last-named means including a we ghtedpivoted member engageable with the'lever when the latter and the gateare approximately in line.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

PRENTISS R. GRAHAM.

lrVitnesses: a

JOHN V. THOMSON, 'J- H- GRA M,

